<template>
  <div>
    <button class="btn">按钮</button>
    <h2 v-red>hahah</h2>
  </div>
</template>

<script>
export default {
  name: "Button",
};
</script>

<style scoped>
.btn {
  width: 50px;
  height: 50px;
  background-color: skyblue;
}
</style>